Home / 85,278.53-127,931.36-28,354.46

Finding the Fourth Proportional to 85,278.53, 127,931.36 and 28,354.46

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Solution

The fourth proportional to 85,278.53, 127,931.36 and 28,354.46 is: 42,536.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,278.53 : 127,931.36 = 28,354.46 : x
  2. Step 2: Convert to fraction form
    85,278.53/127,931.36 = 28,354.46/x
  3. Step 3: Cross multiply
    85,278.53x = 127,931.36 × 28,354.46
  4. Step 4: Simplify right side
    85,278.53x = 3,627,423,848.44
  5. Step 5: Solve for x
    x = 3,627,423,848.44/85,278.53
  6. Step 6: Final answer
    x = 42,536.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.